Nut lock



Dec. 5, 1933. G. T, MILLER 1,938,529

NUT LOCK Filed May 31, 1932 Georye TMiZler Patented Dec. 5, 1933 I UNITED STATES PATENT OFFICE NUT LOCK George T. Miller, Oakland, Calif.

Application May 31, 1932. Serial No. 614,583

4 Claims. (01. 151-30) This invention relates to an improved nut lock, The arms 6, 7 are tapered at their free ends. and the principal object of the same is to pro- The angle of the inner side of each free end is vide, in a manner as hereinafter set forth, a approximately sixty degrees for the purpose of nut lock or an extremely simple and economical enabling an unskilled or careless workman to construction whereby a convention nut and bolt more easily start the look upon the bolt with 00 may be securely locked together at any desired which it is to be used while at the same time position without altering or impairing the efreducing to a minimum the possibility of injury ficiency of either the lock or the nut and bolt to the threads of the latter. with which it is used. The free ends are squared at their outer sides 10 A further object of the invention is to provide, and beveled as at 10, 11 at their inner sides. 06

in a manner as hereinafter set forth, a nut lock Each arm 6, 7 has its inner side oppositely which may be readily placed in operative posibeveled throughout from the beveled inner sides tion or released therefrom, and which may be of its free ends to the portion 5. The bevels on used an infinite number of times without renderthe inner sides of the arms 6, 7 are indicated ing it in any way less efiicient for its purpose. 12, 13 respectively. The bevel 12 provides a 70 A further object of the invention is to provide, knife edge 14 for guiding the look when the a nut lock which will comply with virtually all latter is being placed in operative relation to a statutory requirements or regulations governing bolt and assists in retaining the lock in such the use of such devices. relation. The bevel 13 is formed with a series of" With the foregoing and other objects in view, ratchet teeth 15 which point inwardly of the -75 not at this time more particularly enumerated, lock, that is to say in a direction towards central but which will be readily apparent; this invenportion 5. The space between the arms 6, "7 is tion consists in the novel construction and arof a less width than the smallest diameter of rangement of parts, more particularly set forth the threaded portion of the bolt which they and described and embodied in the claims hereengage, for the purpose of enabling the arms to 80 unto appended. It is to be understood, that resiliently engage the bolt. changes and modifications may be resorted to A rectangular lip 16 is formed integrally with which fall within the scope of the invention as the portion 5 and extends at substantially right claimed angles with respect to the same from the outer Referring now to the drawing, which is merely side edge of the latter. Thislip is intended to illustrative of one form of the invention, like abut the peripheral face of the nut 2 so that numerals indicate like parts throughout the sevrotation of the nut 2 upon the bolt will be preeral views: vented even in the event that the arms of the Figure 1 is a side elevation of a bolt together lock are not placed in the threads of the bolt 35 with a sectional nut and nut lock showing the which are nearest the outer face of the nut.

relative position of the look as it engages the The width of the lip corresponds substantially threads of the bolt and the peripheral face of to the diameter of the bolt. th t, In operation, the nut is screwed upon the bolt Figure 2 is a section on line 22 of Figure 1. to the desired point, the lock is then driven upon 40 Figure 3 is an end view of a bolt and nut the threaded end of the bolt adjacent the outer equipped with a nut lock embodying the invenface of the nut in such a manner that the lip ti of the lock will abut the peripheral face of the Figure 4 is a perspective view of the nut lock. nut and the bolt will seat in the seat provided In the drawing, 1 indicates an ordinary bolt, for its reception. The knife edge of the lock will 45 2 a nut upon the theaded end 3 thereof, and 4 enter in and engage the convolutions of the the nut lock of my invention. threads of the bolt to guide the lock up against The nut lock 4 is formed of a flattened piece the outer face of the nut, while the toothed edge of resilient metal generally U-shaped in contour of the lock will retain the lock securely in posihav n a Ce al P n 5 d a pair of locking tion by engaging the bolt on the side opposite to 50 arms 6, 7 arranged in opposed parallel spaced that in which the knife edge acts. 1 relation and integral with portion 5. The outer Having thus fully described my invention, sides of the arms are flushed with the ends of what I claim is:- portion 5. The latter has rounded outer corners 1. A nut lock comprising a nut locking memand an arcuate inner side edge 9 to provide a ber including a central portion, a pair of spaced 55 seat for the bolt 1. parallel arms and a lip, each of said arms merging at one end into the inner side of said central portion and having a tapered free end part, each of said arms being of substantially uniform width from the inner end of its tapered end part to its point of mergence with said central portion and having its inner edge oppositely beveled from said central portion to the outer terminus of its tapered free end part, one of said arms having its beveled inner edge formed with a row of teeth extending from the inner side of said central portion to the inner end of the tapered free end portion of the arm, that part of the beveled inner edge of each arm between its tapered free end part and said central portion being straight, and said lip being integral with the outer side of said central portionadjacent the ends of the latter and disposed at right angles to said arms.

2. A nut lock comprising a nut locking member including a central portion, a pair of spaced parallel arms and a lip, each of said arms merging at one end into the inner side of said central portion and having a tapered free end part, each of said arms being of substantially uniform width from the inner end of its tapered end part to its point of mergence with said central portion and having its inner edge oppositely beveled from said central portion to the outer terminus of its tapered free end part, one of said arms having its beveled inner edge formed with a row of teeth extending from the inner side of said central portion to the inner end of the tapered free end portion of the arm, that part of the beveled inner edge of each arm between its -tapered free end part and said central portion -'--1direction towards said central portion.

3. A nut lock comprising a nut locking member for seating on a threaded bolt portion and including a central portion and a pair of spaced parallel arms for positioning against the threaded portion of the bolt, each of said arms merging at one end into the inner side of said central portion and having a tapered free end part of V-shaped contour, the inner side edge of each tapered part being disposed substantially at an angle of each of said arms being of substantially uniform width from the inner end of its tapered end part to its point of mergence with said central portion and having its inner edge oppositely beveled for engagement with the threads of the bolt, one of said arms having its oppositely beveled inner edge formed with a row of teeth extending from the inner side of said central portion to the inner end of the tapered free end part of the arm, that-stretch of the beveled inner edge of each arm extending from the inner end of its tapered free end part to said central portion being straight and the distance between the said stretches being less than that of the smallest diameter of the threaded portion of the bolt to be engaged bysaid arms to provide for the arms resiliently engaging the bolt.

4. A nut lock comprising a nut locking member for seating on a threaded bolt portion and including a central portion and a pair of spaced parallel arms for positioning against the threaded portion of the bolt, each of said arms merging at one end into the inner side of said central portion and having a tapered free end part of V-shaped contour, the inner side edge of each tapered part being disposed substantially at an angle of 60, each of said arms being of substantially uniform width from the inner end of its tapered end part to-its point of mergence with said central portion and having its inner edge oppositely beveled for engagement with the threads of the bolt, one of said arms having its oppositely beveled inner edge formed with a row of teeth extending from the inner side of said central portion to the inner end of the tapered free end part of the arm, that stretch of the beveled inner edge of each arm extending from the inner end of its tapered free end part to said central portion being straight and the distance between the said g,-

stretches being less than that of the smallest diameter of the threaded portion of the bolt to be engaged by said arms to provide for the arms resiliently engaging the bolt, said tapered parts having their inner side edges of the same length and of greater length than the outer side edges thereof, and said teeth pointing in a direction towards said central portion.

GEORGE T. MILLER. 

